{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1131-2BG40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1131-2BG40","canonicalUrl":"https://aoctrl.com/siemens/3RH1131-2BG40","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1131-2BG40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, size S00, 3 NO instantaneous contacts, screw and snap-on mounting, IP20 front, 73 mm depth.","salesMarkdown":"## Auxiliary contactor for control-circuit switching The Siemens 3RH1131-2BG40 is a SIRIUS auxiliary contactor in the S00 frame size, carrying 3 instantaneous normally-open contacts. It is designed for control-circuit switching — signaling, interlocking, and logic-level loads — not motor power. The contacts are rated 10 A at 24 V, 6 A at 230 V, and 1 A at 690 V, covering the common AC and DC control voltages found in industrial panels. Mounting is via screw or snap-on onto standard DIN rail. The 45 mm width (one standard module) and 73 mm depth leave room for gland plates and side-by-side contactor stacks. ## Coil and wiring Terminals accept 2x (0.25... 2.5 mm²) solid or stranded, or 2x (24... 14 AWG).","metaTitle":"Siemens 3RH1131-2BG40 SIRIUS Auxiliary Contactor, 3 NO, 10A","metaDescription":"Siemens 3RH1131-2BG40 SIRIUS auxiliary contactor, size S00, 3 instantaneous NO contacts, rated 10A at 24V, 6A at 230V, 1A at 690V. IP20 front, screw/snap-on mount. Current lifecycl","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"73 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"45 mm","Height":"60 mm","Rated Value":"125 V","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Leading Contact":"0","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","During Transport":"-55 ... +80 °C","Fastening Method":"screw and snap-on mounting","Full-Scale Value":"1.1","Shock Resistance":"10g / 5 ms and 5g / 10 ms","Delayed Switching":"0","Lagging Switching":"0","Mounting Position":"+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface","Size Of Contactor":"S00","Product Brand Name":"SIRIUS","Contact Reliability":"one incorrect switching operation of 100 million switching operations (17 V, 1 mA)","Degree Of Pollution":"3","Product Designation":"Auxiliary contactor","at 24 V rated value":"10 A","Of Contactor Typical":"30 000 000","at 110 V rated value":"1 A","at 220 V rated value":"0.27 A","at 230 V rated value":"6 A","at 400 V rated value":"3 A","at 500 V rated value":"2 A","at 690 V rated value":"1 A","Instantaneous Contact":"3","For Auxiliary Contacts":"0","Make-Before-Break Switching":"0","Substance Prohibitance (Date)":"07/01/2006","protection class IP on the front":"IP20","Product Extension Auxiliary Switch":"Yes","closing power of magnet coil at DC":"3.2 W","holding power of magnet coil at DC":"3.2 W","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (24 ... 14)","operational current at AC-12 maximum":"10 A","reference code according to IEC 81346-2":"K","Finely Stranded With Core End Processing":"2x (0.25 ... 1.5 mm²)","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","Touch Protection Against Electrical Shock":"finger-safe","with low demand rate according to SN 31920":"40 %","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","Of Auxiliary Contacts Instantaneous Contact":"0","with high demand rate according to SN 31920":"75 %","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"3","Type Of Voltage Of The Control Supply Voltage":"DC","Identification Number And Letter For Switching Elements":"31 E","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Required Spacing With Side-By-Side Mounting At The Side":"0 mm","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","Type Of Electrical Connection For Auxiliary And Control Circuit":"Cage Clamp terminals","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000","Design Of The Fuse Link For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=231683&mlfb=3RH1131-2BG40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1131-2BG40/alternatives.json"},"ai":{"faq":[{"question":"Will 3RH1131-2BG40 drop into a panel that was specified around 3RH2140-1BP40 without rewiring?","answer":"Both are S00-frame SIRIUS auxiliary contactors with the same 45 mm width and screw/snap-on mounting, so the mechanical fit is identical. The difference is contact configuration: the 3RH1131-2BG40 has 3 NO contacts, while the 3RH2140-1BP40 carries a different contact arrangement. Verify your control circuit's NC requirements before swapping."},{"question":"What compliance documentation does this brand provide for 3RH1131-2BG40?","answer":"RoHS compliance is documented with a substance prohibition date of 2006-07-01. The part carries IP20 front protection and pollution degree 3 rating per IEC standards."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1131-2BG40","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3RH1131-2BG40 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}